Beveling-machine.



No. 811,174. PATENTED JAN. 30, 1906. L. H. RICE.

BEVELING MACHINE.

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L. H. RICE. I BEVELING MACHINE.

APPLIGATION FILED PEB.16. 190.3.

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No. 811,174. PATENTED JAN. 30, 1906 L. H. RICE.

BEVELING MACHINE.

APPLICATION FILED FEB. 16, 1903* 5 SHEETS-SHEET 3.

No.. 811,174. PATENTED JAN. 30, 1966.

L. H. RICE. BEVEMNG MACHINE.

APPLICATION FILED TEILIG. 1903.

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BEVELING MACHINE.

APPLIQATION TILBD FEB 1e 1903 5 SHEETS-SHEBT 6.

PATENT ornion.

LOWELL H. RICE, OF CHICAGO, ILLINOIS, ASSIGNOR TO METAL SECTIONAL FURNITURE COMPANY, A CORPORATION OF MAINE.

BEVELING-IVIACHINEl Speccation of Letters Patent.

Patented Jan. 30, 1906.

Application led February 16, 1903. Serial No. 143,534.

hereby declare that the following is a full and exact description thereof, reference being had to the accompanying drawings.

This invention relates to machines for beveling or mitering bookbinders boards-such as cloth boards, tar-boards, pasteboards, or

' the like, including soft woods and other materials of similar consistency. Such work is at present done largely by hand, a sharp handknife being used for the purpose. Such machines as have been designed and oonstructed for the purpose heretofore have failed in securing a clean even out by reason of the tendency of the materials to cling and drag on the cutting-surfaces.

My invention consists, first, in the mechanism for perfectly and rapidly executing the bevel.

It consists, second, in the mechanism for executing a like bevel on a number of boards at a single operation.

It consists, third, in the mechanism for automatically clamping a number of boards mto the machine for beveling.

It consists, fourth, in the adjustment of the machine for regulating the angle of the bevel.

It consists, fifth, in the mechanism for ad.- justing the'depth of the cut to be made.

It consists, sixth, in the various novel devices and combinations of the same herein illustrated and described, together with their mechanical equivalents,and pointed out with more particularity in the claims appended hereto. f

'In the drawings, Figure l is a perspective view of my machine, taken from the rear. Fig. 2 is a view of the front elevation of my machine. Fig. 3 is a sectional view of my machine, taken through the line X X of Fig. 2 and looking toward the left. Fig. 4 is a sectional plan view of my machine, taken through the line Y Y of Fig. 2. Figs. 5, 6, and 7 are detail illustrations of the automatic clutch which I use.

More particularly described, A designates the frame of the machine, comprising side members A A consisting of legs A2 A2, long `joint to the crank-disks C C slotted standards A3 A4. gether by the horizontal the lower cross members A A7 A8 A.

The cutting mechanism of my invention is described as follows: It consists of an upper A3, andthe shelves A4 These side members A A are joined toand movable sharp-edged knife B, fitted within a heavy bar or frame B. The bar B is constructed of heavy material, is swung between the standards A3 A3, and fitted with projecting lugs B2 B2, which slide perpendi ularly within the slotted standards A3 A3 and project as to their free ends'beyond the outer surface of A3 A. The lower side of the said bar B and the one to which the knife B is attached presents a straight surface, but out of horizontal plane, the end nearest to one of the standards A3 being higher than the end nearest the other standard A3. The knife B (a straight sharp-edged tool) is secured to the said bar B at said lower side by means of bolts B3 B3, and. so secured presents a sharp cutting edge in relation to, but out of horizontal plane with, the lower cutting edge B4. The lower cutting edge B4 is a 'firm strong bar of approximate rectangular contour extending j horizontally between and rigidly secured to the standards A3 A3 near their lower ends. Said -bar B4 is highly nished as to its top side and also the inner or side nearest the knife B, so as to form for presentment to the said knife B a sharplydefined edge formed by the right-angular contact of the said upper and inner polished sides. The lower edge BL and the upper edge or knife B, being out of horizontal plane, are brought into contact first at one end of the respective edges and from said ends come gradually into contact throughout their length, as do the blades of a pair of shears. The operating mechanism of the said upper knife B is described as follows: To the lugs B2 B2 on either end of they knife-bar B are secured by a iiexible joint one end of the respective rods C C. The other end of the rods C C are attached by a pivotat or near the circumference of said disks C C, which disks lie on the outside of the respective side members A A of the frame and near the bottom. These disks C C are secured at their center to theshaft C2, which is journaled into the respective side members A A" near the bottom. The shaft C2 is connected with the driving-shaft C3 by means of the gears C4 C5,

top member A5 and IOO attached, respectively, to the shafts C2 and C3. The shaft C3 is journaled at its ends onto the rear faces of the said members A A and near the bottom C C. Upon the drivingshaft C3 and intermediate of the side members A A the driving-wheel C3 revolves. The hub of the said driving-wheel C3 extends as to one side C3 beyond the side surface of the wheel, and within this projectingpart of the hub C3 lies theV clutching mechanism which connects the driving-wheel C3 to the shaft C3 and applies the driving power to the machine.

The clutching device is illustrated in detail in Figs. 5, 6, and 7. Within the hub end C3 is fitted a bushing D, which as to its inner surface is ratcheted D D. That part of the shaft C3 lying adjacent to said ratchets and that part lying immediately beyond and outside the hub C3 is slotted to receive the pawl D2. This pawl consists of two parts D3 and D1, made, however, of one piece. The width of the part D3 is equal to the diameter of the shaft C3, and the width of the part D1 is equal to the diameter of a casing D5, which surrounds that part of the shaft C3 which lies between the hub C3 and the journal-block C, and which casing is perforated to receive the ends of the part D1. Inserted within the slotted shaft the part D3 lies immediately adjacent to the ratchets D of the hub C3, and the part D4 lies immediately without the hub and passes through the casing D5. Immediately beyond said pawl D2 and from the hub C3 lies a spring-seated pin DG within a suitable slot in the said shaft C3 and the casing D5. DG is provided with a lug D7, engaged with the said part D1. When the said spring-seated pin is released, it forces one end of the part D3 of the pawl beyond the surface of the casing D5. Lying without the casing D5 and in opposition to the part D4 of the pawl D2 is a concave cam D3, slidingly engaged with a platform D11, affixed to the frame A of the machine. The cam Ds is secured to a plate D, which slides within a suitable groove in the surface of the platform D11. The plate D3 is in turn attached to a compound foot-lever D10, the free or power end of which projects from the front of the machine within easy reach of the foot of the operator.

The operation of the clutching device is secured as follows: When out of contact, the drive-wheel turns freely upon the shaft, and the part D3 of the pawl D2 lies Within the diameter of the shaft C3 and out of contact with the ratchets D D. One end of the part D2 of the pawl D2 lies at the surface of the casing D5 and against the face of the cam D3. Vhen the power end of the lever is tripped or forced downward by the operator, the cam D8 is withdrawn by the operation of the lever D10 out of contact with the end of the art D1 of the pawl D2. The spring-post DG t en forces one end of the part DL1 out and beyond the surface of the casing D5, thereby forcing the part D3 of the pawl D2 beyond the surface of the shaft C3 and engaging with the ratchets D within the hub of the revolving drivingwheel C3. The shaft C3 is then thrown into action and through it the cutting mechanism. In order to throw the machine out of gear and out of contact with the power or driving wheel C3, I provide a coiled spring D12, which replaces the lever to its original position when the power end is released. When the lever is replaced by the spring D12, the cam D8 is made to slide back into position in opposition to the projecting end of the part D1 of the pawl. This projecting end D1 is then caught upon the surface of cam D3 and gradually forced by the said cam DS back into the casing D5. At the same time the part D3 is gradually withdrawn from the ratchets D and back within the diameter of the shaft C3, throwing the machine out of gear. ln order that the machine may come to rest almost immediately when disconnected from the said driving-wheel C3, I provide a friction-clamp attached to the shaft C2' and held in place by a bearing C11 upon the shaft C3, which clamp is designed to overcome any momentum which the machine may have at the moment of release from the power and stop it at once. Afurther purpose of this frictionclamp C10 is to counterbalance the weight of the knife-bar B and hold the knife B upward and out of contact with the lower knife-bar B1 when the machine is out of gear.

In order that the machine may be stopped automatically upon the completion of one operation of the knife-bar, I provide a wheel D13, secured to the shaft C2 and operating in relation with a small roller D15, which is secured to the lever D10 near its power end. The rim of the wheel D13 is grooved to forni a track for the roller D15. At one point on its rim the Wheel D13 is provided with a recess`D11. The disks C C by one complete revolution perform one complete operation of the machine. Then as the disks C C and the wheel D13 are attached to and revolve upon the same shaft C2 the wheel D13 makes one revolution in the completion of one operation of the machine. The wheel D13 is of such size that at all points of its circumference except the recess D14 it will in relation with the roller D15 hold the power end of the lever downward as forced by the foot of the operator and hold the clutching mechanism in contact. When the roller in the revolution of the wheel D13 passes into the recess D13, the power end of the lever is raised by the operation of the spring D12 and the machine disconnectedfrom the driving-wheel C3, as aforesaid.

The feed-table of my device is new in its construction and is illustrated in the sectional view Fig. 3. It consists of the table E, supported by the blocks E E2, the whole resting IOO IZO

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upon the shelves A4 A4 of the side pieces A A. The table E is a broad piece of metal or other material, the upper or inner side of" which is smooth for holding the board P when being operated upon. The inner and lower edge of the table E lies in close proximity to the cutting edge of the lower cutting-bar B4. In order to change or shift the angle of the table E with the plane of the knives B and B4, I- provide the blocks E and E2. E is firmly secured to the lower or back side of the table E and presents to the block E2 a convex surface. E2 is the lower block and is slidingly engaged with the shelves A4 A4. It presents to the said convex surface of E a correspondingly-concave surface, and the said convex and concave surfaces of the two respective blocks E and E2 have sliding engagement one with the other. convex and concave surfaces describe the segment of a circle the center of which is the lower and inner edge of the said table E, the purpose of this being that the plane of the table E may be changed without changing the position of its said lower and inner edge. On the face of the said convex surface of block E', I provide a number' of polished surfaces e c e e, which form the points of the contact of said block E with corresponding polished surfaces on the concave surface of block E2. In order to hold the blocks E and E2 firmly together, I provide clamp-screws E3 E5,which pass through block E2 and engage With the block E at its ends by means of lugs e5 e5, which clamp in a segmental groove on either 1end of the said convex surface of said block Not only is it necessary to provide for the regulation of the angle of the cut to be made, but I must provide a means of regulating the depth of the cut to be made on the board. With the lower and inner edge of the table E lying in contact with the cutting edge of the lower knife B4 and the table E inclined toward the plane of the knife B it is seen that with the board P to be cut lying against the lower edge of the table E the knife in operation would make a cut through the entire thickness of the board, or inasmuch as the cutis made at an angle the board after being cut would have on the beveled end a sharp edge. This in some instances is undesirable. Therefore I must provide some means of shortening the cut. I do this by providing means of withdrawing the table from the knife by sliding the block E2 along the shelves A4. Block E2 is clamped to the shelves A4 A4 by means of clamp-screws E4 E4, extending through suitable slots in shelves A4 A4 and into block E2. Upon the release of the said screws E4 E4 the block E2 may be moved backward or forward on the shelves A4 A4, the iscrews E4 E4 sliding along the slots in the shelves A4 A4. By this movement the table E is moved backward and away from the cutp The said studs E5 E, secured to the shelves A4 A4, and

into sockets in the rear face of E2. On the rear or lower face of the table E, I providea suitable handle e, whereby the angle of the said table can be changed and regulated by tilting the table upon the release of the clamping-screws E3 E3.

When the board P is placed upon the table E, some device must be used to hold it in place while the operation of beveling is being executed. For this purpose I provide an automatic clamp, described as follows: F represents the clamp proper and consists of a heavy piece of material which extends between the side standards A3 A'rs and slides upward and downward within suitable grooves arranged upon the inner faces of the said standardsA3 A5. The inner face or the one extended toward the knife B is smooth and lies parallel and adjacent to the said knife B. The clamp F presents to the board P at its lower end an angular face which will approximately register with the board P as placed upon the angular table E; The clamp sliding freely within the said grooved standards A3 A3 is of suoli weight that some means must be provided to hold it in an upward or retired position while the knife B is out of operation and while the board P is being inserted or removed. I therefore design two or more arms F F extending upward from the upper end of the clamp F and through suitable apertures in the top piece A5. I also provide studs B5 B5 of like number and corresponding position to the arms F F, which studs extend upward from the knife bar B and through the said top piece A5. They are turned at right angles at their upper ends and perforated to receive the upper ends of the arms F F, which pass through such perforations in the studs B5 B5 and are fitted with shouldered heads F2 F2, which prevent the arms F F from being withdrawn from the perforated studs B5 B5.

When the machine is set in operation and the knife bar B starts on its downward movement, the studs B5 B5 move downward, thereby releasing the arms F F and permit the clamp F to also move downward. .The

lower edge of the clamp F extends in its sus-l pended positionvbelow the knife B, so that in operation the clamp F reaches the board P before the knife B does and clamps it for the cutting. When the operation of cutting is completed and the knife-bar B passes upward to its retired position, the studs B5 B5, which have been sliding on the arms F F in the downward movement after the clamp F has stopped on the board P, catch the heads F2 F2 as they move upward and lift the clamp IOO ISO

F away from the board P and to its retired position.

In order to facilitate the downward movement'of the clamp F, I provide a number of coiled springs F3 F3, seated upon suitable pins extending upward from the upper face of the clamp F. These springs are shouldered at their lower end against the upper face of the said clamp F and at their upper end against studs protruding from the inner faces of the standards A3 A3.

In consideration of the variation of the style and thickness of the boards to be oper ated upon I find it necessary to provide some form of adjustable back guide for the boards, and it must be of such size and style that it will serve to hold one or more boards, as may be desired. This improvement I describe as follows: My guide consists of two plates G and G, lying to the rear of and just below the knife B. The top edges of the plates G and G are cut to such an angle as to correspond with the angle of the knifeB. The plate G lies immediately in the rear of the knife B and extends between the faces of the standards A3 A3 and is held in place by engagement with the plate G. This plate G lies parallel to and to the rear of the plate G or farther from the knife B and slides within suitable grooves upon the inner faces of the standards A3 A3. It is su ported by hinged arms G2, attaching it to tffe knife-bar B. The plate G is adjustably secured to the plate G by a series of adjustable screws G3 G3, passing through plate G and socketed into the plate G. Said plate G is held firmly in place by'a series of spring-seated posts G1 G1. The said posts G4 G1 are attached as to one end to the plate G, and as to the other end they are free and slide within suitable perforations in plate G.

By the o eration of the adjustable screws G3 G3 the p ate G can be advanced or retired and regulated as a guide for the board P. Vhen the board P is placed upon the table E, it slides downward until its lower end strikes the guide-plate G, which holds it until the clamp F descends to clamp it. Any number of boards P may be inserted one upon the other, and the plate G will hold them all till they are clamped.

The top edge of the plates G and G are cut parallel to the knife B and lie a short distance beneath said knife B in order that the shaving from the cut may have an outlet. The shaving falls over the guide-plates G G and outward. To prevent the shavings from falling between the guide-plates G G, I provide a cover-plate G3, which is secured to plate G and extends over plate G, but is not secured thereto.

The purpose of hinging the arms G2 is that the knife B may be easily removed from the machine for sharpening. The arms G2 are unbolted from the bar B and thrown outsimi@ ward and downward, thereby permitting the knife B, which has been released from the bar B, to be removed.

The operation of my machine is described as follows: In the normal position, with the machine at rest and out of connection with the motive power, the knife B rests at the top of the frame of the machine and away from the knife B4, held there by the action of the friction-clamps C10 C11. The clamp F by its connection with the knife-frame B is likewise held in a suspended position and away from the feed-table E. The board P to be beveled is placed upon the table E, which is adjusted to the desired angle, and is made to slide forward until it rests against the back guide G, which is adjusted as desired. The operator then trips with his foot the lever D10 and through its operation throws the machine into connection with the motive power. The machine is thrown into action and the knife B and the clamp F move downward. The clamp F reaches the board P on the table before the knife B does and by its own weight and the action of the springs F3 clamps the board P while being cut. The knife B then strikes the board at one side and in its down ward movement executes the bevel from one side to the other, as would a pair of shears. The shaving falls over the shield G5 and out backward. The knife B is then returned by the action of the disks C C to its original position and in ascending catches the clamp F and lifts it free from the board P. When the knife B and clamp F shall have reached their original position, the wheel D13 shall have completed one revolution and the roller D13 moves into the recess D11 and the lever D10 assumes its original position, thereby automatically releasing the machine from the motive power. When two or more boards are to be beveled at the same time, they are placed upon the table E, one upon the other, and made to slide against the back guide G, which is of such width as to accommodate any desired number.

While I describe particularly one form of clutching device, any suitable form of clutch may be used to effect the connection with and release from the motivepower. Likewise other forms of'gears and frames may be IIO used, those described herein being merely preferable to me.

I claim as my inventionl. A feed-table for a beveling-machine consisting of a table supported by a block superposed upon another block and which blocks are adjustably fitted to each other by respective convex and concave surfaces, and means for actuating said blocks.

2. In a machine for beveling millboards and the like, the combination with, a feed-table, y

a back guide, a clamp and means for actuating said clamp, of means'for cutting one or more millboards comprising a horizontal straight-edge, and a knife set at an angle with said straight-edge, and coacting with the same and movable in a perpendicular plane, and means forlowering and raising said knife.

3. In a machine for beveling millboards and the like, the combination with a horizontal straight-edge or ledger-blade, and a corresponding knife set on an angle to said ledger-blade, and movable in a perpendicular plane, and means for actuating said movable knife, of a feed-table comprising a Yflat table supported by a block superposed upon another block and which blocks are adjustably fitted to each other by respective convex and concave surfaces, and means for actuatin g said adjustable blocks.

4. In a machine for beveling millboards and the like, the combination with cuttingknives, and means for operating the same of a feed-table supported by a block superposed upon another block, and which block in turn rests upon the frame ofthe machine the said blocks being adjustably Iitted to each other by a respective convex and concave surface, which forms the segment of a circle of which the edge of the feed-table lying nearest to the cutting-plane is the center, and means for securing said blocks together.

5. In a machine for beveling millboards and the like, the combination with cuttingblades, one stationary and the other movable in a perpendicular plane, a feed-table and means for actuating said blades, of an ladjustable back guide, consisting of two parallel plates, one of which is secured to the frame of the said movable knife, and the other adjustably attached to the said secured plate and extending toward the cutting'- plane from that side of the cutting-plane opposite to the feed-table, and means for actuating said adjustable guide.

6. In a machine for beveling millboards and the like, the combination with cuttingknives, `an adjustable feed-table, and means for operating said knives and means for actuating said feed-table, of a back guide consisting of two plates lying opposite to said feedtable and on the opposite side of the cuttingplane of said knives, one of said plates being secured to the frame of one of the said knives and the other lying between said secured plate and the cutting-plane of said knives and being adjustably secured to said secured plate, and means for advancing' said adjustable plate toward and retiring it from said cutting-plane.

7. In a beveling-machine, a feed-table consisting of a table secured at its rear end to a block fitted with a convex surface, the forward end of said table being free; a block secured to the frame of said machine and tted with a concave surface, said convex and concave surfaces having adjustable engagement with each other. j

8. In a beveling-machine, a feed-table consisting of a table having its forward end free from securement, and being secured at its rear end to a block superposed upon another block, which latter block is attached to the frame of said machine, and which blocks are fitted respectively with convex and concave surfaces at the point of contact with each other, and means for adjusting said blocks in their relation with each other, and with the frame of the said machine.

LOWELL II. RICE.

Witnesses:

RUSSELL S. CLARK, C. C. CLARK. 

